Variability and Correlation Studies in Onion (Allium Cep A L.)

Studies to investigate the extent of variability and inter-relationship between seed yield and its contributing attributes were undertaken in onion during 1970–71, at the Division of Vegetable Crops and Floriculture, Indian Agricultural Research Institute, New Delhi. Observations recorded on nine different traits indicated highly significant varietal differences in respect of all the characters. The heritability estimates worked out were quite high (89.14–98 45 per cent). The expected genetic advance was also very high for number of flowering stalks (89.55 per cent), seed yield (77.44 per cent) and quite high for number of seeds per head, number of leaves and number of tillers.